Backend and APIs skills

13,133 tagged Backend and APIs, measured the same way as everything else here.

Browse within: LLM 148agents 117skills 114agent 88agentic-ai 85api 80azure 68antigravity 66ai-coding 63claude-code-plugin 61cursor 54cli 53cybersecurity 53javascript 52

use-miller

266

darraghoriordan/use-miller

Skill Codex

Build, configure, provision, diagnose, verify, deploy, or extend an application created from the Miller starter. Use for projects containing miller.config.json, especially when creating an app, setting up production, configuring self-hosted Better Auth or Stripe, integrating either Next.js or an independent browser…

not rated 51 changed 1mo ago A 93 tokens

dataverse-mcp

267

korchard333/claude-power-platform-community

Skill Claude Code

Dataverse MCP (Model Context Protocol) Integration. Use when: querying Dataverse data conversationally, Copilot Studio tool integration, schema discovery in constrained environments, live data validation during development.

not rated 50 +1 6mo ago A 43 tokens original MIT

regenerate-api

268

bravodev-hub/appointme

Skill Claude Code

Regenerate the AppointMe frontend API client (orval/TanStack Query hooks + TypeScript schemas) after the backend OpenAPI surface changes. Use this whenever backend endpoints, request/response DTOs, or other contract-affecting types are added, removed, or modified — e.g. after editing files under src/AppointMe.Api…

not rated 50 changed 4d ago A SkillSpector: warn 132 tokens original MIT

api-auditor

269

saeed-vayghan/gemini-agent-skills

Skill Claude CodeCodex

Expertise in auditing and testing API endpoints. Use when the user asks to "check", "test", or "audit" a URL or API.

not rated 49 +3 9mo ago A 35 tokens original MIT

web3-dev

270

blockscout/agent-skills

Skill Claude CodeCodex

Build web3 applications, scripts, CLIs, bots, mobile apps, and desktop apps that need blockchain data via the Blockscout PRO API — a single HTTP API spanning 100+ EVM chains. Invoke this skill whenever the user wants to read blockchain data over HTTP (transactions, blocks, addresses, tokens, NFTs, logs, contract…

not rated 49 +3 4mo ago A 212 tokens original MIT

workflow-builder

271

ballerina-platform/ballerina-vscode

Skill Claude CodeCodex

Use this skill whenever you are writing or modifying a Ballerina workflow — declaring a @workflow:Workflow function or its @workflow:Activity steps, calling workflow:run / workflow:getWorkflowResult / workflow:sendData, or when the user describes a long-running, durable, or crash-resilient multi-step business process…

not rated 49 yesterday A 130 tokens original Apache-2.0

fubon-trade-api

272

Kelu0427/fubon-tradeapi-ai-skill

Skill Codex

A coding guide for Fubon Neo, also called Fubon Securities TradeAPI, a Taiwanese brokerage API for market data, trading, accounts, and related workflows.

not rated 48 +1 4mo ago A 108 tokens original MIT

clawpilot

273

kcchien/clawpilot

Skill Codex

Expert skill for OpenClaw (v2026.2.19) — self-hosted AI gateway connecting chat apps (WhatsApp, Telegram, Discord, Slack, iMessage, Signal, LINE, Matrix, Teams, Google Chat) to AI agents. Use when user asks about: installing/configuring/updating OpenClaw, setting up or troubleshooting chat channels, security hardening…

not rated 48 6mo ago A 187 tokens original MIT

rever

274

greekr4/rever-browser

Skill Claude CodeCodex

Reverse-engineer web APIs by driving a running Rever Browser instance — connect to its published MCP endpoint and use its browser-automation, network-capture, and JS-bundle-analysis tools. Use when the user types /rever, asks to reverse or analyze a website's API, capture or inspect its network traffic, deobfuscate…

not rated 48 +3 2d ago A SkillSpector: pass 82 tokens original MIT

verify

275

windoze95/cantinarr

Skill Claude Code

Drive the Cantinarr Flutter app in a browser to verify UI changes at runtime — no backend required. Use when a change to app/lib needs visual/behavioral verification (layout, navigation, theming).

not rated 48 yesterday A 44 tokens AGPL-3.0

qodex-ai/ai-agent-skills

Skill Claude CodeCodex

Provide expert guidance on backend and database services. Advises on database design, APIs, authentication, and deployment.

not rated 47 +2 9mo ago A 28 tokens

postmark-webhooks

277

ActiveCampaign/postmark-skills

Skill Claude CodeCodex

Use when setting up Postmark outbound webhooks for tracking email delivery, bounces, opens, clicks, spam complaints, or subscription changes — includes webhook configuration, endpoint verification, per-webhook statistics, retry behavior, payload handling, and security.

not rated 46 changed 1mo ago A SkillSpector: warn 54 tokens original MIT

workos-setup

278

workos/skills

Skill Claude CodeCodex

Set up WorkOS AuthKit sign-in in a project with npx workos@latest install, which needs no WorkOS account. Use when the user asks to add WorkOS or AuthKit authentication to an app, to scaffold a new app with WorkOS, or to claim the temporary WorkOS environment the installer created.

not rated 46 +1 yesterday A 71 tokens original MIT

goddd-api-doc

279

ixugo/goddd

Skill Cursor

Instructions for keeping API documentation in Apifox, a service for describing and testing web APIs. It uses OpenAPI 3.1, a standard format for documenting API endpoints and their request and response data.

not rated 45 changed 27d ago A 80 tokens

qiskit-mcp-dev

280

Qiskit/mcp-servers

Skill Claude Code

Guide development of Qiskit MCP servers. Use when creating tools, resources, tests, or new servers. Helps with async patterns, pytest fixtures, GitHub CI/CD setup, and code quality. Trigger on "add tool", "add resource", "write test", "new server", "FastMCP", "MCP development", or "GitHub workflow".

not rated 45 +4 22d ago A 81 tokens original Apache-2.0

darto-add-route

281

evandersondev/darto

Skill Claude CodeCodex

Add or modify HTTP endpoints in a Darto (Dart) web app — verbs, path/query params, request-body reading, route groups, and Context response helpers. Use when building or changing API routes in a project that depends on the darto package (import 'package:darto/darto.dart'). Not for Express/Node — Darto handlers take a…

not rated 44 3mo ago A 90 tokens original MIT

zach-lingxing-mcp

282

zach22-1999/lingxing-mcp

Skill Claude Code needs its repo

A Chinese-language operations skill for configuring and troubleshooting the Lingxing ERP OpenAPI MCP service. Lingxing is an enterprise resource planning system for business operations.

not rated 44 3mo ago A 81 tokens original MIT

design-api

283

paraskakis/skills

Skill Claude CodeCodex

Design an API end-to-end — from requirements to a validated OpenAPI spec. Generates stories for review, then produces a linted spec. Emmanuel Paraskakis's method for designing APIs with LLMs. Use when user says "/design-api" or asks to design an API from requirements or stories. For a single step only, use…

not rated 43 17d ago A 90 tokens original MIT

wp-plugin-development

284

fernandotellado/ai-skills

Skill Claude CodeCodex

Architecture and development guidelines for WordPress plugins published on wordpress.org: file structure, plugin header, lifecycle hooks, Settings API, admin UI, escaping helpers for admin JavaScript, default values and option migrations, translatable defaults, multisite-shared resources, short-circuit filters, custom…

not rated 43 changed 25d ago A 141 tokens GPL-3.0

powertools-aws

285

aws-powertools/powertools-mcp

Skill Claude CodeCodex

ALWAYS use this skill when writing AWS Lambda functions in Python, TypeScript, Java, or .NET. Provides serverless best practices for structured logging, distributed tracing (X-Ray), CloudWatch metrics, idempotency, batch processing, and event handling using Powertools for AWS Lambda. Essential for any Lambda…

not rated 42 4mo ago A 71 tokens archived

add-a-service

286

lonormaly/builders-stack

Skill Claude CodeCodex needs its repo

Scaffold a new service under services/ in the builders-stack monorepo. Use when something needs its own URL, port, or independent deploy. Covers the package, entrypoint, config, Tilt, deployment registry, and shared small-image build path.

not rated 42 1mo ago A SkillSpector: pass 55 tokens original MIT

astra-vector-backend

287

erichare/skillroute

Skill Claude CodeCodex

Design Astra DB Data API and vector-search backends for retrieval, metadata filtering, and LangChain-compatible stores.

not rated 41 1mo ago A SkillSpector: pass 27 tokens original MIT

django-patterns

288

VenTheZone/pi-dots

Skill Claude CodeCodex

Django architecture patterns, REST API design with DRF, ORM best practices, caching, signals, middleware, and production-grade Django apps.

not rated 40 2mo ago A 32 tokens

At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: